Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!) - Article 2279 - go-pugleaf

Article View: comp.sys.sun.hardware

Article #2279

Back to comp.sys.sun.hardware Previous Next

Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!)

#2279

From: david johnson
Date: Sun, 10 Jan 1993 21:20

31 lines
1746 bytes

lindh@uhasun.hartford.edu (Andrew Lindh) writes:

>In article <1993Jan9.022926.26234@siemens.com>, aad@siemens.com (Anthony Datri) writes:
>> 
>> >Why the heck did Sun not put better serial chips in their new machines??
>> >Isn't it obvious by now that the Zilog chips SUCK?
>> 
>> What's so terrible about the Zilog chips?
>> ======================================================================8--<

>On a Sun the highest standard speed is 38.4K!!!
>You can't get to 57.6K......

That's not a limitation of the Zilog SCC; the problem is the tty
driver only using 4 bits to represent possible baud rates under
SunOS.  Not to mention Sun's non-implementation of hardware flow
control (that has been hashed over many times in this group).
If the TIOCSET* ioctls were finally obsoleted, and the baud
rate could specified as an integer, the SCC could be programmed
for much faster rates.

>-- 
>Andrew Lindh, a student at the University of Hartford -- Computer Science
>INTERNET: lindh@uhasun.hartford.edu | NOTE: All views here are MINE!!!
>BITNET:   lindh@hartford.bitnet     | SuperBeta SL-HF2100      N1MTD
>UUCP:     lindh@uhasun.uucp         | ---- When will I graduate???

Dave Johnson
ddj@gradient.com
uunet!gradient!ddj

Technical Details

Message-ID: <350@gradient.gradient.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!gradient!ddj

References:

<rcaldwel.726296968@ponder> <1993Jan6.115253.19572@elroy.jpl.nasa.gov> <1993Jan9.022926.26234@siemens.com> <1993Jan10.150522.8160@sol.ctr.columbia.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!gradient!ddj
From: ddj@gradient.gradient.com (david johnson)
Newsgroups: comp.sys.sun.hardware
Subject: Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!)
Message-ID: <350@gradient.gradient.com>
Date: 10 Jan 93 21:20:55 GMT
References: <rcaldwel.726296968@ponder> <1993Jan6.115253.19572@elroy.jpl.nasa.gov> <1993Jan9.022926.26234@siemens.com> <1993Jan10.150522.8160@sol.ctr.columbia.edu>
Organization: Gradient Technologies Inc., Hudson MA
Lines: 31

Reply to Parent Message